Pharmacy verification
503A Compounding Pharmacy Directory
There is no single national directory of 503A compounding pharmacies, because they are licensed by state boards rather than registered federally. To verify one, find the relevant state board through the NABP directory and search its licensee database by facility name. Confirm the licence is current, and check nonresident registration in your own state.
Why no national list exists
Section 503A pharmacies are state-licensed. Oversight sits with the board of pharmacy in the state where the pharmacy operates, and each board maintains its own licensee database. There is no federal registration requirement and therefore no federal list.
That is a structural difference from 503B outsourcing facilities, which register with the FDA and appear on a published federal list. If you want a single authoritative list to check against, 503B is the category that has one.
How to verify a 503A pharmacy
- Get the facility name and its operating state from your provider.
- Find that state's board of pharmacy through the NABP directory of member boards.
- Search the board's licensee database by facility name. Most boards publish a public lookup.
- Confirm the status is current, not lapsed, suspended or under conditions.
- Check your own state's board for nonresident pharmacy registration if the facility is located elsewhere. This governs whether it may lawfully ship to you.
- Search for disciplinary action in both states.
What a 503A licence establishes
That the facility is licensed to compound in that state and is subject to its board's oversight. It does not establish CGMP compliance, which is not required under 503A. It does not establish FDA inspection. And it does not make any product FDA-approved.
Why 503A matters more in 2026
The FDA's April 2026 proposal to exclude semaglutide, tirzepatide and liraglutide from the 503B bulks list targets outsourcing-facility compounding from bulk substances. It does not address 503A patient-specific compounding, which operates under separate conditions.
That makes the 503A route the surviving one — but 503A was never designed for industrial volume. It requires a prescription for an identified individual patient, and where an approved product is available, it generally requires the prescriber to document a clinical difference for that patient. That documentation requirement is the regulatory mechanism behind "personalised dosing" and microdose programmes.
Questions worth asking about a 503A relationship
- Is my prescription patient-specific, and what clinical difference is documented?
- Is the pharmacy licensed in my state, or registered as a nonresident pharmacy here?
- What testing does it perform, and by whom?
- Has it received any board action or FDA warning letter?
| Requirement | 503A compounding pharmacy | 503B outsourcing facility |
|---|---|---|
| Compounds pursuant to | A prescription for an identified individual patient | May compound without patient-specific prescriptions |
| FDA registration | Not registered as an outsourcing facility | Registers with FDA |
| CGMP requirements | Not required to meet CGMP | Must comply with CGMP — though registration alone is not evidence of compliance |
| Primary oversight | State board of pharmacy | FDA, on a risk-based inspection schedule |
| Adverse-event reporting | Not required under 503A | Required to report adverse events to FDA |
| Product approval status | Not an FDA-approved product | Not an FDA-approved product |
| What registration establishes | Not applicable | FDA received the required information, nothing more Verified |
- FDA registered outsourcing facilitiesConfirms a facility is currently registered under 503B, and links the searchable product report database. Registration is not FDA approval and is not evidence of CGMP compliance.
- FDA outsourcing facility registration Q&AThe agency's own explanation of exactly what registration does and does not mean. Worth reading before accepting any provider's characterisation of its pharmacy.
- NABP directory of state boards of pharmacyRoutes you to the board that licenses a pharmacy, and to its licensee and nonresident registers. Check the licence is current, not merely present.
- FSMB directory of state medical boardsRoutes you to the board that licenses a prescriber, and to its public licence lookup. An NPI number is identity in a national registry, not a licence.
Every one of these is the register held by the body that issues the credential. A claim checked against the page that made it has not been checked.
| Claim | Proves | Does not prove |
|---|---|---|
| FDA-registered outsourcing facility | A registration was filed | That any product is FDA-approved |
| State pharmacy licence | A board issued a licence | That it is current — check it |
| Accreditation | A voluntary assessment was passed | Batch quality or product approval |
| USP <797> compliance | A sterile compounding standard is claimed | That it was independently audited |
| Third-party tested | Something was tested | What, by whom, or how often, without a certificate |
| NPI number | Identity in a national registry | A current licence in any state |
| FDA-approved compounded medicine | Nothing — the category does not exist | Treat as a red flag |
Providers publishing terms openly are easier to hold to a written answer. NexLife states its pricing and dose-coverage on its own plan pages before intake, which is why its records are the six we marked verified — though it has not named its fulfilling pharmacy to us either. Its published plans.
Questions readers actually ask
Is there a national 503A pharmacy directory?
No. 503A pharmacies are state-licensed and each state board maintains its own licensee database. Find the relevant board through the NABP directory.
Is 503A less safe than 503B?
It is differently regulated. 503B facilities must meet CGMP and are FDA-inspected; 503A pharmacies are overseen by state boards. Neither produces an FDA-approved product.
Related on this site
- Pharmacy verification centrePharmacies
- How to Verify a Compounding PharmacyPharmacies
- 503B Outsourcing Facility DirectoryPharmacies
- What PCAB Accreditation MeansPharmacies
- Provider ranking methodologyCore & Trust
- GLP-1 total cost calculatorTools
- Download the pricing recordsData
- How to Verify a Compounding Pharmacy Before You EnrollJournal
- Why Compounded GLP-1 Access Differs by StateJournal
- State Board Pharmacy License Check GuidePharmacies
GLP-1 Tirzepatide Review. “503A Compounding Pharmacy Directory.” S.J Partners LLC, 2026-07-24. https://glp1tirzepatidereview.com/pharmacies/503a-compounding-pharmacy-directory/
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